The string is not just a random sequence of characters; it represents a specialized payload used in cybersecurity to test for a critical vulnerability known as Path Traversal (or Directory Traversal).
: Likely a placeholder or a prefix used by a vulnerable application feature, such as a template engine or file downloader. -template-..-2F..-2F..-2F..-2Froot-2F.aws-2Fcredentials
: Only allow alphanumeric characters in file parameters. Do not allow dots ( . ) or slashes ( / ). -template-
-2F decodes to /